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16232Re: [tracker2] HTX-202 Cable PTT?

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  • qrv@kd4e.com
    Jan 10, 2014
    • 0 Attachment
      Thanks Scott!

      D-Sub/DB-9
      Pin
      ------------------------
      1 Mic (2.5mm) Tip
      5 Spkr (3.5mm) Tip
      6 Ground/Shell
      7 12VDC
      (pins 2, 3, 4, 8, 9 are unused)

      I take it that the 2.2k PTT resistor is inside the OT3m box?

      I don't see what is the purpose for DC power - the HTX-202
      has a power source as does the OT3m.

      David

      > Like most HTs, PTT on the HTX-202 is combined with the mic audio line.
      > The tracker signals PTT by connecting the mic audio and ground lines
      > through a 2.2k resistor.
      >
      > Scott
      >
      > On 1/10/2014 10:51 AM, qrv@... wrote:
      >> I've looked at this cable for use between my OT3m and HTX-202:
      >>
      >> https://www.argentdata.com/catalog/product_info.php?products_id=141
      >>
      >> Where is PTT, please?
      >>
      >> Thanks!



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